Shutter for moving-picture machines.



F. W. HOCHSTETTER.

SHUTTER FOR MOVING PICTURE MACHINES.

APPLICATION FILED NOV. 8, 1913 1,094,147, Patented Apr. 21, 19m

ami Muses 5 woe n for UNITED STATES PATENT OFFICE.

FREDERICK W. HOCHSTETTER, OF NEW YORK, N. Y., ASSIGNOR TO H. P. PATENTSAND PROCESSES COMPANY, INC., A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Apr. 21, 1914.

Application filed November 8, 1913. Serial N 0. 799,916.

To all 2071 0m '1' it may concern Be it known that I, FREDERICK W.H0031- sTE'i'rER, a subject of the Emperor of Germany, and a resident ofNew York, county and State of New York, have invented a certain new anduseful Improvement in Shutters for Moving-Picture Machines, of which thefollowing is a full, clear, and exact specification.

This invention relates to a class of devices adapted to be used inconjunction with machines for photographing and exhibiting movingpictures.

My invention has for its object primarily to provide a shutter designedto be applied to a camera for use in photographing living objects, orscenery either in blackand white effects, or in natural colors uponpreferably a transparent film as well as being adapted to be utilized inconjunction with a projecting apparatus for displaying the pictures upona screen, and wherein is employed a holder having a plurality ofopenings, the holder being adapted to be reciprocably transmittedtransversely so that the openings thereof will consecutively registerwith the exposure window of the machine.

Other objects of the invention are to pro vide a form of frame orholder, whereby one or more transparent plates of the primary colors maybe carried therein; to provide a revolving apertured disk which servesto alternately cut-off and permit the passage of light through theopenings of the holder; to provide a cam for intermittently checking themovement of the holder as well as imparting reciprocation thereto whenthe drive shaft is driven; and toprovide means which serves to impartrotation from the drive shaft to the apertured disk simultaneously withthe operation of the reciprocable holder.

A practical embodiment of the invention is represented in theaccompanying drawing forming a part of this specification in whichsimilar characters of reference indicate corresponding parts in all theviews, the said invention being more fully described hereinafter andthen pointed out in the claims at the end of the description.

In the drawing, Figure 1 is a fragmentary section, partly in detail,taken through a moving picture machine, with one form of shutterembodying my I invention applied thereto. Fig. 2 is an enlarged frontView of the shutter, and the mechanism for operating the same from acommon drive shaft. Fig. 3 is a view, partly in section, of one end ofthe shutter, Fig. 4: is an enlarged -view of the development of the camfor operating the holder of the shutter, and Fig. 5 is a section takenon the line IIII. of Fig. 2. The shutter is adapted to be employed inconunction with a machine for projecting movmg pictures, or may be usedupon a camera for photographing living objects, or scenery in black andwhite effects, or in natural colors, and which has a casing 10 providedwith an exposure window 11 in its front wall 12 upon which is mountedthe usual telescopic lens barrel, as 13, the machine being provided withthe customary mechanism for intermittently transmitting a film, as 14,througha framing device 15 which is arranged in the machine at theexposure window 11, and which is provided with the usual windows, all ofwhich may be of the usual, or any preferred types. The shutter isoperated in unison with the operation of the mechanism of the machinethrough the medium of a common drive shaft 16 which is preferablymanually operable by a crank handle 17. h

The shutter has a substantially rectangular frame, or holder 18'comp0sedof a front wall 19 and a rear wall 20 which is spaced from the frontwall. The lower longitudinal edges of the walls 19 and 20 are, connectedtogether, while the upper longitudinal edges of said walls aredisconnected to provide an opening into the holder. Throughcorresponding parts of the walls 19 and 20 are a plurality of spacedregistered openings 21 each of which is approximately the same dimensionas the exposure window 11 of the machine. Within the holder, and betweeneach pair of the registered openings 21, is a partition 22 whereby anumber of chambers is provided in the holder, and extending from one endof the holder is a lug 23 having a. pin 23 extending therefrom. Theholder 18 is supported between two brackets, as 24 and 25, which aresecured upon the inner surface of the front wall of the casing of themachine to permit the holder to be reciprocated transversely so thateach pair of the openings 21 thereof will be intermittently registeredwith the exposure window 11.

Serving as means to reciprocate the holder 18 as well as intermittentlychecking its re ciprocatory movement when the machine is operated by therotation of the drive shaft 16, upon the drive shaft is held a cam 26.The cam 26 is in the form of a drum in the peripheral surface of whichis a continuous irregular groove 27 which, as shown, is formed somewhatin the fashion of steps disposed diagonally from one end to the otherend thereof in one-half of its periphery, and the groove is similarlydisposed in a reverse direction in the second half of the periphery ofthe drum. To one of the walls of the easing of the machine is fastenedtwo substantially U-sha-pe'd spaced straps 28 and 29 supporting a bar 30which is slidably movable in the straps in a longitudinal direction withrelation to the cam-drum, Extending from one surface of the slidable bar30 is a pin upon which is a freely rotatable roller 31 movably disposedin the irregular groove 27 of the cam-drum 26. Disposed in straddlearrangement upon the roller 31, and between the cam-drum 26 and theslidable bar 30, is the bifurcated lower end of a lever 32, the upperend' of which is slotted, at 34, and through said slot is passed the pin23 of the lug 23 of the holder 18. The lower portion of the lever 32 isfulcrumed, at 35, to the frontwall of the casing of the machine so thatwhen the drum 26 is revolved by the rotation of the drive shaft 16 theroller-31 will be guided in the groove 27 of the cam-drum forintermittently sliding the bar 30 back and forth in the straps 28 and29, and the upper part of the lever will thereby be swung upon itsfulcrum to reciprocate the holder 18 in a transverse direction as wellas intermittently checking the holder for registering the openings 21thereof with the erposure Window 11 of the machine. The film will inturn be subjected to intermittent exposures of light when focusedthrough the lens-barrel of the machine.

In order to intermittently cut-off the light when directed from theinterior of the ma chine through the framing device 15 upon the film,especially when the shutter is used in conjunction with a projectingapparatus, I may employ a disk, as 36, held upon a stud 37 which isournaled in the front wall of the casing of the machine. Through thedisk 36 are a number of openings 38 which are spaced apart a sufficientdistance whereby each opening will register with one of the openings 21of the holder 18 when the shutteris operated. The blank parts of thedisk 36 thereby serve to intermittently cut-off the light when directedfrom the interior of the machine through the framing device 15.

Serving as means to revolve the disk 36 in unison with the reciprocationof the holder 18 when the drive shaft is driven, on the stud 37 is helda small gear 39 meshing with a large gear 4L0 held upon a stud -11journaled in the front wall of the casing of the machine. Also held uponthe stud 41 is a pinion 42 which is in mesh with an idler 43 held upon astud ist. journalcd in the front wall of the casing, and this idler isin mesh with a gear 45held upon a stud 4:5 which is also journaled inthe casing of the machine. On the stud 45 is held a bevel gear 46 whichis in mesh with a bevel gear 47 held upon the drive shaft 16, and byproperly gearing the disk 36 in this manner it will be revolved by therotation of the drive shaft simultaneously with the reciprocation of theholders 18 for accurately registering the openings of the disk and theopenings of the holder so'as to control the intermittent passages oflight whether directed through the lens barrel into the machine, ordirected from the interior of the machine through the framing device 15.

l/Vhen the shutter is employed in conjunction with a machine forproducing and exhibiting moving pictures in black and white effects itis used, as above described, Without any colored plates, but whenutilized for producing and exhibiting the pictures in colors, throughthe top opening of the holder 18 is inserted one, or a number ofcolored, plates of glass, or other transparent mate rial, as 48. As isusual in the art of producing and displaying this class of movingpictures, each of the transparent plates is preferably of one of theprimary colors, and as the holder 18 may be provided with a desirednumber of the openings 21 any suitable number of the plates may be usedwith the shutter.

In the foregoing description, I have embodied the preferred form of myinvention, but I do not wish to be understood as limiting myselfthereto, as I am aware that modifications may be made therein withoutdeparting from the principle or sacrificing any of the advantages ofthis invention, therefore I reserve to myself the right to make suchchanges as fairly fall within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a shutter of the character described, thecombination with a casing having an exposure window through which lightisfocused, of a substantially rectangular holder having a number ofspaced openings therethrough, said holder being supported in the casingso as to be reciprocated and intermittently checked during itsreciprocation, whereby each opening will consecutively register with theexposure window for passage of light therethrough, and said holder beingadapted to carry a number of transparent plates, a drive shaft, andmeans connected to the drive shaft and to the holder for imparting areciprocatory movement to the holder and also for intermittentlychecking the movement of theholder when the drive shaft is rotated.

2. In a shutter of the character described, the combination with acasing having an exposure window through which light is focused, of asubstantially rectangular chambered holder having an open top, andhaving anumber of spaced registered openings therethrough, said holderbeing supported in the casing so as to be reciprocated andintermittently checked during its reciprqcation, whereby each pair ofthe registered openings will consecutively register with the exposurewindow for passage of light therethrough, and said holder being adaptedto carry a number of transparent plates, a drive shaft, a cam held uponthe drive'shaft, and means connected to the holder and operated by thecam for imparting a reciprocatory movement to the holder and also forintermittently checking the movement of the holder when the drive shaftis rotated.

3. In a shutter of the character described, the combination with acasing having an exposurevwindow through wh light is to cused, of asubstantially rectangular holder having a number of spaced openingstherethrough, said holder being supported in the casing so as to bereciprocated and intermittently checked during its reciprocation,whereby each opening will consecutively register with the exposureWindow for passage.

of light therethrough, and said holder being adapted to carry a numberof transparent plates, a drive shaft, a cam held upon the drive shaft,and a lever pivoted to the holder and movably connected to the cam forimparting a reciprocatory movement to the holder and also forintermittently checking the movement of the halder when the drive shaftis rotated.

4. In a shutter of the character described,

the combination with a casing having an exposure window through whichlight is focused, of a substantially rectangular holder having a numberof spaced openings therethrough, said holder being supported in thecasing so as to be reciprocated and intermittently checked duringitsreciprocation, whereby each opening will consecutively register with theexposure window for passage of light therethrough, and said holder beingadapted to carry a number of transparent plates, a drive shaft, meansconnected to the drive shaft and to the holder for imparting areciprocatory increment to the holder and also for intermittentlychecking the m vement of. the holder when the dri 'ie shaft is rotated,a disk hat a number of spaced apertures therethroug i, said disk beingrevolubly held in the casing so each oi": its openings will registerconsecutively with one of the openings of the hold r,

termittently checked during its reciprocation, whereby each pair of theregistered openings will consecutively register with the exposure windowfor passage of light there through, and said holder being adapted tocarry a number of transparent plates, a drive shaft, a cam held upon thedrive shaft, means connected to the holder and operated by the cam forimparting a reciprocatory movement to the holder and also forintermittently checking the movement of the holder when the drive shaftis rotated, a disk having a number of spaced apertures therethrough,said disk being revolubly held in the casing so that each of itsopenings will register consecutively with one of the openings of theholder, and means operated when the drive shaft is driven for revolvingthe disk in unison with the reciprocation of the holder.

6. In a shutter of the character described,

the combination with a casing having an exposure window through whichlight is focused, of a substantially rectangular holder having a numberof spaced openings therethrough, said holder being supported in thecasing so as to be reciprocate d and intermittently checked during itsreciprocation, whereby each opening will consecutively register with theexposure window for passage oi light therethrough, and said holder beingadapted to carry a number of trans parent plates, a drive shaft, a camheld upon the drive shaft, a lever pivoted to the holder and movablyconnected to the cam for imparting a reciprocatory movement to theholder and also for intermittently check. the movement of the holderwhen the c. shaft is rotated, a disk having a number of spaced aperturestherethrough, said disk being rcvolubly held in the casing so that eachof its openings will consecutively wiin one of the openings of theholder, and

ring operated when the drive shaft is di ven for revolvin he disk inunison with eciprocation o holder. or the character described,

having an exgular chamin, and havopen teed regist so as to icereciprocated and inin the casi' termittently checked during itsreciprocation, whereby each pair of the registered openings willconsecutively register with the exposure window tor passage of lighttherethrough, and said holder being adapted to carry a number oftransparent plates a drive shaft, a cam held upon the drive shaft, meansconnected to the holder and operated by the cam for imparting areciprocatory movement to the holder and also for intermittentlychecking the movement of the holder when the drive shaft is rotated, adisk having a number of spaced apertures therethrough, said disk beingrevolubly held in the casing so that each of its openings will registerconsecutively with one of the openings of the holder, and gearingoperated when the drive shaft is driven for revolving the disk in unisonwith the reciprocation of the holder.

This specification signed and witnessed this seventh day of November A.D. 1913. FREDERICK W. HOCHSTETTER. \Vitnesses:

Ron'r. B. ABBOTT, M. DERMODY.

